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Method and apparatus for providing transparent persistent data support to foreign data types

  • US 5,864,864 A
  • Filed: 09/27/1995
  • Issued: 01/26/1999
  • Est. Priority Date: 09/27/1995
  • Status: Expired due to Term
First Claim
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1. An instance of a data type having a data structure stored in a computer readable medium and arranged for use in maintaining a persistent data associated with the instance, the data structure comprising:

  • a transient value data field for storing an internalized data format representation of the persistent data associated with the instance, he internalized data format being a format that is arranged for use with data operators provided by a computing environment under which the instance is implemented during a life cycle of the instance; and

    a persistent value data field for storing an externalized data format representation of the persistent data associated with the instance, the externalized data format being a format that is arranged for surviving the life cycle of the instance, wherein the internalized and externalized data format representations of the persistent data are permitted to be different representations of the same persistent data.

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